This is basically a process of sketch interpretation focusing merely on Elevation aesthetics/theme. Process included refining the sketch and furthermore rendering it with Prismacolor Markers. All three were done in a time period of 2 days.

Scheme A - Sketch

LineDrawing

The Rendering - A combination of the LineDrawing and Prismacolor Marker along with shadows to give depth. The same process was applied to the rest of the schemes.

In the image above you can see the level of detail, always keeping the sketchy feel since this is the earliest stage of Design.